Hi Guys,

I bought me an RX7 1995 Model. The car is stock... i think... and would like to get 400whp minimum out of the car. Can you guys kindly advise which components I would need to achieve this power levels. Also what is the Max power I could get without changing standard turbo setup.

Cheers

 

Do some research there is more than enough info on this forum....
You just gotta look for it...

 

Is in the FAQ thread stickied in this forum. Do spend some time reading it.
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/faq-3rd-gen-other-useful-links-68640/
https://www.rx7club.com/showpost.php...38&postcount=6

Cheers.

 

-single turbo
-full exhaust
-ugraded igntion
-better or dual fuel pump(s)
-larger injectors
-intercooler(v-mount/front mount)
-higher flow radiator

optional(needs in my opinion)

-decent wideband o2
-boost/water temp/fuel pressure/egt gauges
-diff brace(to protect diff)
-tranny brace(to prevent mis-shifts)

i might have forgot some things...kind of rushed through

 

o...and most important, a TURBO TIMER

 

Did you mean, least important?

I would go roughly in this order:
wideband, exhaust, intake, ecu, intercooler, fuel system, turbo.
Also consider getting a light weight flywheel. That was one of the best mods I did to my car in terms of cost, and benefit/downside balance.

 

yes, it was a joke

 

The max power from stock turbos is 400 in very few cases. 350hp is a reasonable limit for stock twins.

Dave

 

With regards to this ^^^400 HP is very very unlikely from the stock twins unless you run them non-seq. at boost levels which will probably bring the life of your twins below 10k miles. if you want to stay seq. with a decent amount of life your probalby looking at making around 330-340. non-seq. around 350-360 only thing about that is if you run non-seq. you might as well go single in my opinion the only reason to keep the twins is to run seq. Now if you run aftermarket single you have more than a couple options. You said you want a minimum of 400 so your probably going to shoot for something around a gt40r. To run something that size on a stock motor heres a list youll have to check off of things needed and supporting mods as well.

Aluminum radiator ( KOYO, Fluidyne, SR motorsports )
Upgraded Fuel Pump ( Walboro, Supra, Bosche, aeromotive )
Upgraded injectors 750/1600 ( your going to need resistors to run these )
Aftermarket Fuel rails ( RX7 store, KG parts, CJ motorsports )
pulley kit ( Unorthodox, Greddy )
Ignition amp (HKS twin, MSD x4)
High flow exhaust( 3inch+ )
Aftermarket clutch ( Tons of options )
Aftermarket ECU (Power FC, Haltec, tec3)
Aftermarket IC ( Tons of options )
Turbo kit ( turbo, lines, fittings, manifold, waistgate, downpipe, intake, gaskets )
Aux Injection( tons of options your going to need it to run high boost and low boost reliably )

thats just a rough list there are still little things like spark plugs, plug wires, fluids, hoses, block off plates, gauges be careful because its not cheap just a rough estimate if you want to do it right off the parts I just mentioned..... probably around 9k

Hope this doenst turn you off got to pay to play dont go aobut it cheap and cutting corners or your going to have a paper weight of a car siting for months while you get your motor rebiult.....

Chris

 

FWIW, I'm at 370 RWHP running stock twins (sequential) at 14.5 psi. The motor is streetported, and all of my supporting mods are in the sig. Motor has about 3k miles on it.

Dave did say my car dyno'd freakishly high for stock twins though.

 

geez. something that size?? i have seen a few quick spooling 400whp setups. i really dont think he needs a turbo that size unless he wants to run low boost

 

Whats the point of running a big turbo at low boost?

Run a turbo which is mated to the PSI level you want to achieve your goals, than tune for, and run, that psi... Why run a massive turbo (which will have a longer spool time) at a boost level which will not net you maximum gains?? That doesn't make much sense to me...

Though I may be missing something...

 

He said minimum of 400 if he runs a gt35r hes going to have to push it on stock ports to make that kind of power around 17-18lbs and if he wants to really push it hes going to be limited to around 500hp. With a gt40r he can run moderate boost and make his 400 mark with the potential to grow. Honetly i was super surprised how quick my gt35r spooled up I was worried about lag but expected a little if i wouldnt have known what I know now i would have went straight for the gt40r.

Chris

 

my advice to you my good man is, get used to the old girl first. i know that the last thing you wanna hear but get a catback and see how u like it from there and then move on, being HP hungry is fun. But, rx7 are a definite handful, if u didn't already know.

 

good point

 

I'd venture to say that AI should definitely be on that list. Its amazing how little attention is paid to it despite it having a whole subforum here.

 

"The max power from stock turbos is 400 in very few cases. 350hp is a reasonable limit for stock twins." dgeesaman

"With regards to this ^^^400 HP is very very unlikely from the stock twins unless you run them non-seq. at boost levels which will probably bring the life of your twins below 10k miles. " toomucboost4u

"-single turbo" 4cn a1r

given you want a "minimum" of 400 rwhp and the existent realities as to the stock turbo setup as expressed correctly from the above.... you will be needing to lose the stock turbo system.

before you do this consider that there is a sweet spot on the FD modification curve... around 360 rwhp. stock turbos, relatively simple fuel system and other related components.

if you want 400 you need to trash it all. of course you can then make alot more than 400 if you wish. to do 400+ correctly requires a comprehensive re-do of almost all systems. do it right and you will have a powerful reliable FD.

a 360 rwhp FD might be an easy project and you might find very satisfying from a performance aspect.

howard coleman

 

One of the things that I've come to appreciate about your posts Howard, is how clear and concise they are.

What mods do you think it takes to get to that "sweet spot" on the stock twins?

 

You can have a RX-7 on stock twins that is usually faster than a smaller single turbo RX-7 with minimal efforts. (Average)

Bigger in the following:
Fuel Pump
Fuel Injectors
Intercooler
Radiator
Exhaust (DP, MP, CB)

Better in the following:
Ignition
Intake
Ignition wires
ECU (Always get a tune specifically for your car, not your setup.)

Change from stock:
Spark plugs, run all BUR9EQP's
Oil, run 10W-40 or better
Vacuum setup, all viton hosing. Simplify
Pulleys

Add from stock:
Oil catch can, make one rather than using the oil filler neck style
Emissions block-off plates
(OPTIONAL) Aux Injection

Replace for safety:
All hoses
Coolant
Brake fluid
Brake lines
Bushings
Fuel lines


Ofcourse this is a minimal list, it can always get bigger. This is what I would consider a minimal list for anyone considering more power. You will yield high hp, and have a fun car. This is more than enough to kill any pre-C6 Z06's, Cobras, EVO's, STI's, etc. depending on the driver.

I don't recommend non-seq because you basically kill your low-end power. Just go single if your going non-seq.

 

+1 I totally agree with you, if I would of jumped right into a 420HP RX7 and never driven a FD before I could probably guarantee it would get wrapped around a tree. I got my FD 3 years ago when it only had bolt on's. I was amazed of the power they make with a ecu, exhaust, smic, and intake was a very powerful car and a handful to drive. I upgraded in steps prepping the car to go single, upgraded everything so when the kit came in nothing else would have to be done. When I got the T04r it was like I had to learn the car all over again, was a new power level, different powerband, and much more of a handful. I just got done installing my ported motor with a S366 turbo, greddy 3row fmic, 6 puck sprung clutch from act and a pro lite flywheel. At 10psi it is way faster then my t04r on a stock motor with 15/16psi! It literally feels like a roller coaster taking off, I am tuned for 15/16psi but I cant use the power on the street all it does is spin the tires! Now I must look into new rubber, coilovers, trailing arms, and toe links to help keep this thing to stay going straight, and be able to use the power of it and not waste it.

 

you must be joking.............or maybe your dreaming?

 

Thanks guys,

I needed this info to start my mods... I have a 600rwhp 350Z and am not planning to go all out on this RX7 for now. I gonna get a Veilside Forune kit as well and will be happy with 360rwhp... if I want more power I will just drive my 350Z for now. After my kit is installed then i will go for 400+ HP.

So let me get this straight.. in order for me to get 360rwhp.. I do not need to to change any internals on my car... only ECU, Exhaust, Fuel system, and other external stuff will get me that power.. If so that's great!!

I only have 18000miles on the clock at the moment so car so engine and turbos should be fine.

 

^
IMO u will need some porting done to reach 360rwhp with the stock twins.